These results show that if possible, one should avoid using several short transmission windows. Instead, one should use fewer, but longer transmission windows. This would necessitate increasing the systems memory and changing the key generation cycle to accommodate the production of large amounts of key, over longer intervals. In principle, one could also group several smaller transmission windows together to form a larger integration time. This approach was investigated in [1]} in the case of limited satellite overpass time, but here could be used to mitigate against weather induced channel outages. This is valid for finite data security proofs that use smoothed min-entropies, as described in [2]}.
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